HP 53131A, Operating Manual

Page: 84 / 196

Chapter 2 Operating Your Universal Counter
Using Entry/Select (Arrow) Keys
2-8 Operating Guide
2
Using Entry/Select (Arrow) Keys
There are six entry/select keys of which four are “arrow” keys.
The function of the four arrow keys and the Enter key depends on the
Counter’s operating mode (that is, numeric entry, state changing,
sequencing through choices in a menu, etc.). This section describes how
the keys perform in the different operating modes.
To Use During Numeric Entry
• Use the
s
key to move left to select adjustable digits (it does not wrap
around).
• Use the
g
key to move right to select adjustable digits (it does not wrap
around).
• Use the
d
key to increment the selected (highlighted) digit of the
displayed value.
• Use the
f
key to decrement the selected (highlighted) digit of the
displayed value.
• Use the +/
−
key to change the sign of the numeric value.
• Use the Enter key to complete a numeric entry. (If a numeric entry is
changed and the Enter key is NOT pressed, then the value is not
changed.)
To Use When Sequencing Through the Measurement
Function Menus (Freq & Ratio, Time & Period, Other
Meas) and the Recall Menu
• Use the
d
or
s
key to go back to the previous choice in a function or
recall menu. Repeatedly pressing this key will cycle through (and loop
around) the list of choices.
• Use the
f
or
g
key to go forward or to the next choice in a function or
recall menu. Repeatedly pressing this key will cycle through (and loop
around) the list of choices.
• Use the Enter key to select the function or execute the recall, or wait
for the menu to time out for automatic selection/execution.
Enter
+/–